Question

use the periodic table to identify each of the elements below as an alkali metal or an alkaline earth metal. rb: alkali metal alkaline earth metal complete ca: alkali metal alkaline earth metal complete mg: alkali metal alkaline earth metal complete cs: alkali metal alkaline earth metal done

Explanation:

Step1: Recall periodic - table groups

Alkali metals are in Group 1, alkaline earth metals are in Group 2.

Step2: Locate Rb

Rb (rubidium) is in Group 1, so it is an alkali metal.

Step3: Locate Mg

Mg (magnesium) is in Group 2, so it is an alkaline earth metal.

Step4: Locate Ca

Ca (calcium) is in Group 2, so it is an alkaline earth metal.

Step5: Locate Cs

Cs (cesium) is in Group 1, so it is an alkali metal.

Answer:

Rb: alkali metal
Mg: alkaline earth metal
Ca: alkaline earth metal
Cs: alkali metal